I love won ton soup and that usually never gives me any trouble. Other than that it's sort of hit or miss... If they have sesame seeds on the stuff, it usually kills me. As for the fried rice, sometimes it doesn't bother me but some days it does, maybe it's just because it's fried, I don't know.
Also, are you mostly talking about chinese take out or buffet?? Because usually I do alright with the take out but I've had times when I've gone to a buffet and I'm in the bathroom halfway through the meal. I don't know if it has anything to do with the preparation or how it's all just sitting out there but there seems to be a difference.